
Application planning
3.2 Network and system integration
SITRANS SL
Operating Instructions, 12/2010, A5E01132948-04
37
3.2.4
Modbus system configuration
7&RQQHFWLRQ
5&7HUPLQDWLRQ
3OXJ
5&7HUPLQDWLRQ
3OXJ
7&RQQHFWLRQ
7&RQQHFWLRQ
3&3*IRUHQJLQHHULQJ
DQGVHWXSVXSSRUW
6,0$7,&0DQDJHU67(3
Automation system
with Modbus master
Figure 3-3
Example of a system configuration with modbus
System features:
●
The SITRANS SL is controlled by the automation system via Modbus.
●
The measurement results of the SITRANS SL are output to the automation system via
Modbus.
●
When external sensors are to be connected the first choice is to use Modbus although
connection via the analog input of SITRANS SL is also possible.
●
A PC/PG used for the configuration of the automation system is connected to this
automation systemvia an MPI cable.